Demolition Lake Oswego

Lake Oswego Charges a $15,000 Demolition Tax

The tax arrived with Ordinance 2831, adopted on December 3, 2019, and it reaches every demolition permit issued on or after January 2, 2020. The code language leaves no room to negotiate: the owner of property that includes a residential structure for which a demolition permit is issued shall pay a tax to the City in the sum of $15,000.

Payment timing is the part that catches owners out. The tax is collected at permit issuance, so a homeowner treating demolition as the opening line item of a rebuild carries that $15,000 before a single machine reaches the site. It is not billed against the finished project and it is not folded into the permit fee.

The revenue is also restricted. Money received under this section is used solely to maintain City park properties, which means it functions as a levy on teardowns rather than as a cost-recovery charge for inspection work. Nothing about paying it accelerates the permit.

No other jurisdiction we work in carries anything comparable. The same garage teardown priced in Beaverton, Tualatin, or Sherwood does not attract this charge. Inside Lake Oswego city limits it does, and the difference is larger than most demolition line items on a residential quote.

• The charge is flat. It does not scale with the size of the structure, so it weighs hardest on the smallest teardowns.
• It applies to residential structures, so the analysis differs for commercial work.
• The tax follows the city boundary, not the mailing address, so confirm the parcel actually sits inside Lake Oswego before assuming it applies.
• One exemption exists, it is tied to deconstruction, and it is set out in the next section.

Houses Built in 1940 or Earlier Must Be Deconstructed, Not Demolished

Ordinance 2916 added that requirement on November 15, 2022. Deconstruction means the building is taken apart by hand, broadly in reverse order of construction, so that framing, flooring, fixtures, and dimensional lumber can be salvaged instead of landfilled. It is slower than machine work and it carries more labor, and both facts belong in the schedule and the price from the first conversation.

The requirement interacts directly with the tax. The code routes deconstruction projects through LOC 24.06.050, 24.06.070, and 24.06.080, and 24.06.050 is the tax exemption for deconstruction of residential structures. For a house built in 1940 or earlier, the method the code compels and the exemption that relieves the $15,000 charge point in the same direction.

The date is a hard line rather than a guideline. A structure built in 1940 or earlier falls under Section 45.12.110. A structure built in 1941 does not. Because the construction year decides the method, the timeline, and the tax treatment simultaneously, it is the first thing to verify from the county assessor record, before anyone scopes the job or quotes a machine.

A contractor who quotes standard machine demolition on a 1920s Lake Oswego house has not read the code, and that quote will not survive the permit counter.

The 14-Day Notice Lake Oswego Requires Before Work Begins

First, a public sign displaying a notice of demolition, on the form the Building Official provides, posted on the subject property or on the access easement abutting it. Its placement is specified: it must sit where it is clearly visible and readable both from vehicles traveling on a public street and to people walking past.

Second, a mailed notice of demolition, again on the City’s own form, sent to the street address of each abutting residential property. Posting the sign alone does not satisfy the requirement, and neither does mailing alone.

The 14 days run consecutively, so the clock does not pause for weekends or holidays. It runs before work begins, which makes it a scheduling constraint rather than paperwork: a teardown that needs to start in three weeks needs its notice posted and mailed now.

What counts as demolition is defined more broadly than most owners expect. Under the same article, amended by Ordinance 2894 on May 3, 2022, demolition means removal of 50 percent or more of the total surface area of exterior walls or perimeter foundation. A deep remodel that strips more than half the exterior wall area is a demolition for permit purposes, whatever the owner and the designer have been calling it.

The notice can also lapse. If demolition activities cease on the property for more than 60 days, a fresh notice of demolition is required before work resumes. That is a real risk on projects that stall waiting on financing, a subcontractor, or a design revision, and restarting without re-noticing puts the permit at issue.

• Post the sign and mail the letters on the same day, so one date governs the whole window.
• Photograph the posted sign in place, with the street visible, on the day it goes up.
• Treat any stoppage approaching 60 days as a re-notice trigger rather than a scheduling detail.
• Confirm the exterior wall percentage early, because it decides whether the project is a remodel or a demolition.